Would you be willing to add a manifest so this can be "installed" as an app on Android?

sure i'll consider converting it to PWA if people prefer playing the main game than creating and sharing puzzles with the Puzzle Maker.

I think you can just pretend to be a PWA, no need for code changes.

You may need an unused service worker, or not, I don't remember.

This just means your site looks like an Android app (but still needs net, etc).

Thanks, I used to do something like that when I made a tabletop like card maker using three.js + angular 8, but it has been a long time ago, I need to catch up with the details how to implement it with angular v21 since it is almost a completely new framework compared to the old versions